265 	struct file_region *rg, *nrg, *trg;  in region_add()  local
284 		nrg = list_first_entry(&resv->region_cache, struct file_region,  in region_add()
286 		list_del(&nrg->link);  in region_add()
288 		nrg->from = f;  in region_add()
289 		nrg->to = t;  in region_add()
290 		list_add(&nrg->link, rg->link.prev);  in region_add()
301 	nrg = rg;  in region_add()
313 		if (rg != nrg) {  in region_add()
324 	add += (nrg->from - f);		/* Added to beginning of region */  in region_add()
325 	nrg->from = f;  in region_add()
326 	add += t - nrg->to;		/* Added to end of region */  in region_add()
327 	nrg->to = t;  in region_add()
361 	struct file_region *rg, *nrg = NULL;  in region_chg()  local
383 			kfree(nrg);  in region_chg()
402 		if (!nrg) {  in region_chg()
405 			nrg = kmalloc(sizeof(*nrg), GFP_KERNEL);  in region_chg()
406 			if (!nrg)  in region_chg()
409 			nrg->from = f;  in region_chg()
410 			nrg->to   = f;  in region_chg()
411 			INIT_LIST_HEAD(&nrg->link);  in region_chg()
415 		list_add(&nrg->link, rg->link.prev);  in region_chg()
445 	kfree(nrg);  in region_chg()
489 	struct file_region *nrg = NULL;  in region_del()  local
513 			if (!nrg &&  in region_del()
515 				nrg = list_first_entry(&resv->region_cache,  in region_del()
518 				list_del(&nrg->link);  in region_del()
522 			if (!nrg) {  in region_del()
524 				nrg = kmalloc(sizeof(*nrg), GFP_KERNEL);  in region_del()
525 				if (!nrg)  in region_del()
533 			nrg->from = t;  in region_del()
534 			nrg->to = rg->to;  in region_del()
535 			INIT_LIST_HEAD(&nrg->link);  in region_del()
540 			list_add(&nrg->link, &rg->link);  in region_del()
541 			nrg = NULL;  in region_del()
562 	kfree(nrg);  in region_del()